1 files changed, 117 insertions, 0 deletions
diff --git a/propertysheet/src/org/eclipse/wb/internal/core/model/property/table/PropertyTooltipProvider.java b/propertysheet/src/org/eclipse/wb/internal/core/model/property/table/PropertyTooltipProvider.java
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+++ b/propertysheet/src/org/eclipse/wb/internal/core/model/property/table/PropertyTooltipProvider.java
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+/*******************************************************************************
+ * Copyright (c) 2011 Google, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Google, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.wb.internal.core.model.property.table;
+
+import org.eclipse.wb.internal.core.model.property.Property;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+import org.eclipse.swt.widgets.Shell;
+
+/**
+ * Provider for tooltip controls.
+ * 
+ * @author scheglov_ke
+ * @coverage core.model.property.table
+ */
+public abstract class PropertyTooltipProvider {
+  /**
+   * Show tooltip directly on property row.
+   */
+  public static final int ON = 0;
+  /**
+   * Show tooltip below property row.
+   */
+  public static final int BELOW = 1;
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // PropertyTooltipProvider
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  /**
+   * Create tooltip control.
+   */
+  public abstract Control createTooltipControl(Property property,
+      Composite parent,
+      int availableWidth,
+      IPropertyTooltipSite site);
+
+  /**
+   * Shows tooltip {@link Shell}.
+   */
+  public void show(Shell shell) {
+    shell.setVisible(true);
+  }
+
+  /**
+   * Returns position for tooltip control. Usually we should show directly on same row, because we
+   * use tooltip to show just longer (full) text of property. But for "class" property we show
+   * hierarchy, so it is better show it below and allow user see also property row.
+   */
+  public int getTooltipPosition() {
+    return ON;
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Tooltip listener
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  /**
+   * {@link Listener} that hides tooltip on mouse exit or click.
+   */
+  protected static final class HideListener implements Listener {
+    private final IPropertyTooltipSite m_site;
+
+    ////////////////////////////////////////////////////////////////////////////
+    //
+    // Constructor
+    //
+    ////////////////////////////////////////////////////////////////////////////
+    public HideListener(IPropertyTooltipSite site) {
+      m_site = site;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    //
+    // Listener
+    //
+    ////////////////////////////////////////////////////////////////////////////
+    public void handleEvent(Event event) {
+      Control tooltipControl = (Control) event.widget;
+      switch (event.type) {
+        case SWT.MouseDown : {
+          PropertyTable table = m_site.getTable();
+          // convert location from tooltip to table
+          Point p = new Point(event.x, event.y);
+          p = tooltipControl.toDisplay(p);
+          p = table.toControl(p);
+          // send MouseDown to table
+          Event newEvent = new Event();
+          newEvent.x = p.x;
+          newEvent.y = p.y;
+          table.notifyListeners(SWT.MouseDown, newEvent);
+          // hide tooltip
+          m_site.hideTooltip();
+          break;
+        }
+        case SWT.MouseExit :
+          m_site.hideTooltip();
+          break;
+      }
+    }
+  }
+}